/*
 * Copyright (C) 2009 Leandro Aparecido <lehphyro@gmail.com>
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *         http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.metalframework.serialization;

import static org.metalframework.util.AspectUtils.*;

import java.io.*;

import org.slf4j.*;
import org.springframework.aop.framework.*;

public class WritableExternalizableProxy implements ExternalizableProxy {
	
	private static final Logger logger = LoggerFactory.getLogger(WritableExternalizableProxy.class);

	public Object writeReplace() throws ObjectStreamException {
		Object proxy = AopContext.currentProxy();
		
		if (isAdvised(proxy)) {
			logger.trace("Replacing proxy object with target to serialize");
			
			try {
				return new ReadableExternalizableProxy(unwrapIfNecessary(proxy));
			} catch (Exception e) {
				throw new InvalidObjectException(e.getMessage());
			}
		}

		return this;
	}
	
	public Object readResolve() throws ObjectStreamException {
		throw new UnsupportedOperationException("Not supported by ExternalizableProxyImpl, use SerializableProxy");
	}
	
}
